<div class="ibox float-e-margins" style="margin-bottom: 0px;">
    <div class="ibox-content" style="padding: 15px 15px 0px 15px;">
        <div class="row">
            <div class="col-lg-4">
                <ul id="treeDemo" class="ztree" style="margin-top: 0px;"></ul>
            </div>
            <div class="col-lg-8">
                <label style="margin-bottom: 0px;"> <input type="checkbox" value="0" id="mainRole" class="i-checks"> 主角色 </label>
            </div>
        </div>
    </div>
</div>